Adapter for form ties



1943- ,J. c. MUSHET 2,338,026

ADAPTER FOR FORM TIES Filed Nqv. 22, 1941 I V N OR ymzsam/sm'z T ATTORNS Patented Dec. 28, 1943 UNl'lED STAT ADAPTER FOR FORM TIES James C.Mushet, Roselle Park, N. 3., assignor. by mesne assignments, to Ralph E.Ogden, New

York, N. Y.

Application November 22, 1941, Serial No. 420,049

7 Claims.

This invention relates to the provision of a Form tie wedge adapter forcompensating for differences in the distance between forms for concretewhich are held together by tie rods or for unlike lengths of the tierods. It is common practice to build up spaced forms for receivingpoured concrete and to hold them together by driving wedges betweenouter members of the forms and abutments on the tie rods. An example ofsuch an arrangement may be found in Patent No. 2,101,141, issued toDaniel C. Hungerford, December '7, 1937. In such arrangementsdifferences in the dimensions of the material of which the forms aremade, the spacing of the walls of the forms or of the distance betweenthe abutments on tie rods cause variations to occur in the width of thespaces into which the wedges are driven.

An object of this invention is to provide a device for compensating forsuch variations. Another object is to provide an adapter with aplurality of spaced abutments for tie rod heads. This not onlycompensates for the aforesaid variations, but enables the use of tierods of different lengths and also enables the use of tie rods of equallengths on forms of unequal spacing or on forms which are not parallelas when 'one or both of the form walls are battered.v

These and other objects of the invention will appear in the followingspecification in which a preferred embodiment of the invention will bedescribed and its novel features set forth in appended claims.

Referring to the drawing,

Fig. 1 is a side elevation partly in section of parts of a battered wallof a mold form and the end portions of a plurality of tie rods havingenlargedheads thereon, wedges of standard design and adapters whichembody my invention interposed between two of the wedges and theenlarged heads of two of the tie rods;

Fig. 2 is a sectional plan View of some of the parts shown in Fig. 1,the section being taken on the line 22 of the latter figure;

Fig. 3 is a perspective view of the adapter shown in the precedingfigures, the View being taken from the front thereof;

Fig. 4 is a perspective view taken from the back of the adapter; and

Fig. 5 is a front elevation of the lower part of a wedge.

I0, ll, IDA, MA, MB and HB designate walers which are outer horizontalmembers of a form for holding poured concrete.

I2, I2A and I213 are tie rods which pass between the walers. Each ofthese tie rods has an enlarged head It, lSA, 533 near its end and theirends sometimes have ptrtions is somewhat larger than the diameter of therods and smaller than that of the heads and have flattened sides. Theheads form laterally projecting stops for engaging parts of the adapterwhich is described herein.

2% is a wedge having a fiat portion 2i adapted to rest against thewalers and beveled surfaces 22 on either side of a central slot Thelower end 24 of the slot is enlarged to permit the wedge to be placedover the tie rod head These parts are conventional and well known.

to designates an adapter which embodies my invention. This is in theform of a block having a rear surface or base 3! adapted to rest uponthe wedge surfaces 22. Between these surfaces is a projecting lug 32which fits into the wedge slot 23. Approximately half of the adapterforms a front surface 33 spaced from the rear surfaces 35 which isadapted to form an abutment for a form tie head. This surface may becountersunk, as shown at to form a seat for the head. The other half ofthe adapter forms a front surface 35 at a greater distance from thesurface 3! than is the surface 33 so that the block is thicker betweenthe surfaces 35 and Eli than it is between the surfaces and 3!. Thesurface 35 may be countersunk, as at The distance of the surface 33from. the surface 3! and the difference of the distance of the surfaces33 and 35 from the rear surface 35 is preferably slightly less than thetake-up which can be produced by the wedge. The block is slotted at 31and 38 to provide a clearance for the tie rods I2. The surfaces 33 and35 are inclined to the base 3i and to each other. The bottoms oftheseslots converge as shown in Fig. 3, to allow for variations in thepositions of the tie rods in them.

In Fig. 1 the relative positions of the walers is that which they assumewhen the form'wall is battered. The tie rods are shown as havin theirheads in the same vertical plane. The lower wedge 2% is interposedbetween a pair of walers and the head i313 of a tie rod.

Between the intermediate wedge 2i! and a tie rod head ISA an adapter 3%is interposed with the head abutting its lower surface 33, thus forminga compression member. An adapter 30 is interposed between the upperwedge 23 and a tie rod head it with the latter abutting the highersurface 35 of the adapter.

By means of the simple device herein shown and described the desiredcompensation for variations in the distances between the walers and thetie rod heads may be obtained readily. It is not necessary that theexact structure shown and described be used, as variations thereof maybe made within the spirit and scope of the invention and I intend nolimitations other than those imposed by the appended claims.

What I claim is:

l. The combination with a wedge and a tie rod extending through thewedge and having a stop projecting laterally from a fixed positionnear-the end thereof beyond the wedge, of adapter arranged to beinterposed between the wedge and the tie rod stop, said adapter havingparts of different thicknesses with interrupted abutment surfaces forselectively engaging said stop to form a compression member.

2. The combination with a wedge and a tie rod extending through thewedge and having a stop projecting laterally from a fixed position nearthe end thereof beyond the wedge, of an adapter arranged to beinterposed between the wedge and the tie rod stop, said adapter being inthe form of a block having a base and a plurality of interruptedabutment surfaces differently spaced from the base for selectivelyengaging said stop to form a compression member,

3. The combination with a wedge and a tie rod extending beyond the wedgeand having a laterally extending stop near the end thereof beyond thewedge, of an adapter arranged to be interposed between the wedge and thetie rod stop, said adapter being in the form of a block having a baseand having a plurality of abutment surfaces differently spaced from thebase for selectively engaging said stop to form a compression member,said block being constructed with recesses on opposite sides thereof toform clearances for the tie rod.

4. Th combination with a wedge and a tie rod extending beyond the wedgeand having a laterally extending stop near the end thereof beyond thewedge, of an adapter arranged to be interposed between "ie wedge and thetie rod stop, said adapter b g in the form of a block having a base andhaving a plurality of abutment surfaces diiferently spaced from the basefor selectively engaging stop to form a compression member, said blockbeing constructed with recesses on opposite sides thereof convergingtoward the base to form clearances for the tie rod.

5. The combination with a wedge constructed with a longitudinal slot anda tie rod extending through said slot and having a laterally extendingstop near the end thereof beyond the wedge, of an adapter arranged to beinterposed between the wedge and the tie rod stop, said adapter being inthe form of a block having a base adapted to rest on the wedge andhaving a plurality of abutment surfaces differently spaced from the basefor selectively engaging said stop to form a compression member andhaving a lug projecting from its base into the wedge slot.

6. The combination with a wedge having a bearing surface and anothersurface inclined thereto and a tie rod extending beyond the Wedge andhaving a laterally extending stop near the end thereof beyond the wedge,of an adapter arranged to be interposed between the wedge and the tierod stop, said adapter being in the form of a bi ck having a base andtwo abutment surfaces diff}- ently spaced from the base for selectivelyeng ging said stop to form a compression member, said base being adaptedto be seated on the inclined surface of the wedge with either of theabutment surfaces lowermost, said abutment surfaces being inclined tothe base at such angles that one of said surfaces will be substantiallyparallel with the bearing surface of the wedgewhen the base the block isin one position on the wedge and the other abutment surface will besubstantially parallel with the bearing surface of the wedge when thebase of the block is in the reverse position on the wedge.

I. The combination of a wedge constructed with a longitudinal slot andhaving bearing surfaces and inclined surfaces at the sides of the slot,and a tie rod extending through said slot and having a base and twoabutment surfaces differently spaced from the base for selectivelyengaging said stop to form a compression member,

base being adapted to be seated on the inclined surface of the wedgewith either of the abutment surfaces lowermost, said abutment surfacesbeing inclined to the base at such angles that one of said surfaces willbe substantially parallel with the bearing surface of the wedge when thebase of the block is in one position on the wedge and the other abutmentsurface will be substantially parallel with the bearing surface of thewedge when the base of the block is in the reverse position on thewedge, and means for retaining the tie rod stop in desired positions inrelation to the abutment surfaces, said block being constructed withrecesses on opposite sides converging toward the base forming clearancesfor the tie rod and a lug projecting from the base of the look into thewedge slot.

JAMES C. MUSI-IET.

